B♭ Minor Triad

Chord Tones: B♭ Minor Triad

Symbol: m, min, - — Formula: 1-♭3-5

Chord Notation

Roman numeral (e.g. I, IV, V) and Nashville Number notation are key-dependent. See Keys pages for chord function within specific keys.

Inversions

Harmonic Function

The B♭ minor chord commonly functions as the subtonic (♭VII) in C major or subdominant in F major. Its harmonic role varies by key — in major keys it provides subdominant or supertonic color.

The minor triad has a dark, introspective sound created by the flat third degree. It is the foundation of minor key harmony and widely used across all genres of music. The B♭ Minor Triad specifically contains 3 notes: B♭, D♭, F (formula: 1-♭3-5). On piano, Bb-rooted chords start on a black key and create hand shapes that jazz pianists find ideal for voicing seventh chords and extended harmonies. Jazz standards, swing, and big band charts are heavily weighted toward Bb because it allows horn sections to play in their most comfortable range.

Common Progressions

The B♭ Minor Triad frequently appears in these progression patterns (shown in Roman numeral notation relative to key):

• i-iv-v-i
• ii-V-I

Songs Featuring the Minor Triad

Well-known songs where the B♭ Minor Triad — or this chord type — plays a prominent role:

• Stairway to Heaven – Led Zeppelin
• Nothing Else Matters – Metallica
• Losing My Religion – R.E.M.

Tuning Frequencies Across Temperaments

Frequencies shown at A=440 Hz. View full temperament data for any note.

Scales Containing the B♭ Minor Triad

These scales include the B♭ Minor Triad as a diatonic or characteristic chord: